fix(frontends/lean/class): missing explicit initialization/finalization
fix(frontends/lean/class): missing explicit initialization/finalization

soonhokong/lean-osx,rlewis1988/lean,fgdorais/lean,dselsam/lean,dselsam/lean,soonhokong/lean-windows,fpvandoorn/lean2,soonhokong/lean,avigad/lean,soonhokong/lean,javra/lean,fpvandoorn/lean,sp3ctum/lean,fgdorais/lean,fgdorais/lean,sp3ctum/lean,soonhokong/lean-osx,leanprover-community/lean,sp3ctum/lean,eigengrau/lean,eigengrau/lean,leodemoura/lean,UlrikBuchholtz/lean,eigengrau/lean,soonhokong/lean-osx,leanprover/lean,levnach/lean,sp3ctum/lean,fgdorais/lean,javra/lean,Kha/lean,digama0/lean,dselsam/lean,eigengrau/lean,levnach/lean,rlewis1988/lean,soonhokong/lean,c-cube/lean,fpvandoorn/lean,levnach/lean,leodemoura/lean,fpvandoorn/lean2,javra/lean,leanprover-community/lean,dselsam/lean,Kha/lean,leanprover/lean,rlewis1988/lean,javra/lean,leanprover/lean,leanprover/lean,UlrikBuchholtz/lean,htzh/lean,fpvandoorn/lean2,avigad/lean,Kha/lean,digama0/lean,htzh/lean,soonhokong/lean-windows,javra/lean,UlrikBuchholtz/lean,leanprover/lean,johoelzl/lean,levnach/lean,c-cube/lean,soonhokong/lean-osx,Kha/lean,digama0/lean,leodemoura/lean,leanprover-community/lean,rlewis1988/lean,dselsam/lean,johoelzl/lean,avigad/lean,fpvandoorn/lean,johoelzl/lean,htzh/lean,c-cube/lean,dselsam/lean,sp3ctum/lean,avigad/lean,eigengrau/lean,soonhokong/lean-osx,fpvandoorn/lean,soonhokong/lean,leanprover-community/lean,fgdorais/lean,avigad/lean,fpvandoorn/lean2,soonhokong/lean,soonhokong/lean-windows,UlrikBuchholtz/lean,Kha/lean,c-cube/lean,fpvandoorn/lean2,soonhokong/lean-windows,leanprover/lean,c-cube/lean,leodemoura/lean,digama0/lean,UlrikBuchholtz/lean,htzh/lean,leodemoura/lean,fpvandoorn/lean,johoelzl/lean,leodemoura/lean,johoelzl/lean,htzh/lean,digama0/lean,rlewis1988/lean,soonhokong/lean-windows,digama0/lean,johoelzl/lean,fpvandoorn/lean,leanprover-community/lean,avigad/lean,fgdorais/lean,levnach/lean,Kha/lean,leanprover-community/lean,rlewis1988/lean